cubinator Posted November 27, 2017 Share Posted November 27, 2017 I think it's most likely that Starlink is a test bed for a platform for Martian internet, and so is not as optimal for Earthly use atm. Quote Link to comment Share on other sites More sharing options...
Nibb31 Posted November 27, 2017 Share Posted November 27, 2017 19 minutes ago, cubinator said: I think it's most likely that Starlink is a test bed for a platform for Martian internet, and so is not as optimal for Earthly use atm. No. Starlink is supposed to be the cash cow that pays for the BFS and Mars colonies. If it wasn't optimized for Earth, then it wouldn't be much of a business model. Quote Link to comment Share on other sites More sharing options...
magnemoe Posted November 27, 2017 Share Posted November 27, 2017 7 minutes ago, cubinator said: I think it's most likely that Starlink is a test bed for a platform for Martian internet, and so is not as optimal for Earthly use atm. Way overkill for Mars, on Mars you are likely to use geostationary orbit for communication, its no need for an highly celled structure. No its an way to make money as spacex can launch rockets pretty cheap. That they need is launch capacity so they can launch this then not launching for paying customers. Quote Link to comment Share on other sites More sharing options...
tater Posted November 27, 2017 Share Posted November 27, 2017 Quote Link to comment Share on other sites More sharing options...
Hannu2 Posted November 28, 2017 Share Posted November 28, 2017 22 hours ago, sh1pman said: Ahem... Why do you need a high and powerful radio tower to broadcast a signal, but only a small antenna to receive it? Same with GPS. Your phone can receive a GPS signal, but in order to transmit anything back to satellite you're gonna need a much bigger antenna. Kinda like those on sat phones. Transmission depends on product of antenna efficiencies. You can also use a small omnidirectional transmitter antenna with low power and huge receiver antenna with sensitive detector, like small space probe sending data to DSN antenna on the Earth. But there is severe bandwidth limitations in satellite telecommunication. Even optical frequencies could not handle telecommunications for medium sized city. Satellite telecommunications can never replace cable and optical fiber networks in large scale but it can be used in addition to them in remote areas. Quote Link to comment Share on other sites More sharing options...
tater Posted November 28, 2017 Share Posted November 28, 2017 Dec 22 launch. Quote Link to comment Share on other sites More sharing options...
magnemoe Posted November 28, 2017 Share Posted November 28, 2017 3 hours ago, Hannu2 said: Transmission depends on product of antenna efficiencies. You can also use a small omnidirectional transmitter antenna with low power and huge receiver antenna with sensitive detector, like small space probe sending data to DSN antenna on the Earth. But there is severe bandwidth limitations in satellite telecommunication. Even optical frequencies could not handle telecommunications for medium sized city. Satellite telecommunications can never replace cable and optical fiber networks in large scale but it can be used in addition to them in remote areas. This, bandwidth for wireless communication is limited, solution is cells. Bandwidth is still as limited but only inside the cell. This and to reduce spread of signal and light speed delay is why they go for low orbit. it would still be limited to an large area as in hundreds of km"2 sharing the bandwidth. However in low population areas not to talk about the sea or unpopulated ones high speed bandwidth is already limited to satellites with far less capacity. Quote Link to comment Share on other sites More sharing options...
Nightfury Posted November 28, 2017 Share Posted November 28, 2017 4 hours ago, tater said: Dec 22 launch. So Dragon on SLC-40 and Iridium at SLC-4E Vandenberg... Is there anything about Zuma or is it canceled for now ? Quote Link to comment Share on other sites More sharing options...
TheEpicSquared Posted November 28, 2017 Share Posted November 28, 2017 26 minutes ago, Nightfury said: So Dragon on SLC-40 and Iridium at SLC-4E Vandenberg... Is there anything about Zuma or is it canceled for now ? Zuma has been delayed indefinitely, as far as I know. Quote Link to comment Share on other sites More sharing options...
CatastrophicFailure Posted November 28, 2017 Share Posted November 28, 2017 5 minutes ago, TheEpicSquared said: Zuma has been delayed indefinitely, as far as I know. If it ever even existed. Theres also This. Next CRS has apparently been pushed back to the 8th, Irridium from Vandy on the 22nd still on track despite, ahem, “fairing issues” elsewhere. And we may just see Falcon Heavy rise any day now... or not. Quote Link to comment Share on other sites More sharing options...
Nightfury Posted November 28, 2017 Share Posted November 28, 2017 2 minutes ago, CatastrophicFailure said: Next CRS has apparently been pushed back to the 8th Just noticed that this is the first SLC-40 Launch for SpaceX since the explosion, isn't it? Quote Link to comment Share on other sites More sharing options...
CatastrophicFailure Posted November 28, 2017 Share Posted November 28, 2017 16 minutes ago, Nightfury said: Just noticed that this is the first SLC-40 Launch for SpaceX since the explosion, isn't it? Right. So I would surmise that’s part of the reason for the delay from the 4th. Quote Link to comment Share on other sites More sharing options...
tater Posted November 28, 2017 Share Posted November 28, 2017 43 minutes ago, CatastrophicFailure said: If it ever even existed. Theres also This. Next CRS has apparently been pushed back to the 8th, Irridium from Vandy on the 22nd still on track despite, ahem, “fairing issues” elsewhere. And we may just see Falcon Heavy rise any day now... or not. I imagine that the fairing issue is about new generation fairings one way or another. Either recently manufactured fairings might have a materials flaw, or fairing additions to support recovery ops have some technical/material issue. As a result, any launch already on track with an older fairing is fine, and those with a new fairing need whatever has to be checked, checked. I think that FH will be on the pad in the predicted timeframe before the end of the year for static tests if nothing else---and they want to do a number of those. Quote Link to comment Share on other sites More sharing options...
tater Posted November 28, 2017 Share Posted November 28, 2017 Quote Link to comment Share on other sites More sharing options...
tater Posted November 28, 2017 Share Posted November 28, 2017 Quote Link to comment Share on other sites More sharing options...
StrandedonEarth Posted November 28, 2017 Share Posted November 28, 2017 (edited) Wait, what? They’re doing the static fire at the Kerbal Spa....?... oh whoops never mind Edited November 28, 2017 by StrandedonEarth Quote Link to comment Share on other sites More sharing options...
CatastrophicFailure Posted November 28, 2017 Share Posted November 28, 2017 32 minutes ago, StrandedonEarth said: Wait, what? They’re doing the static fire at the Kerbal Spa....... oh whoops never mind Well, judging by some of Musk’s remarks lately, it may be akin to exactly that. Quote Link to comment Share on other sites More sharing options...
tater Posted November 29, 2017 Share Posted November 29, 2017 Quote Link to comment Share on other sites More sharing options...
DAL59 Posted November 29, 2017 Share Posted November 29, 2017 What does that mean? Quote Link to comment Share on other sites More sharing options...
IncongruousGoat Posted November 29, 2017 Share Posted November 29, 2017 9 minutes ago, DAL59 said: What does that mean? The TEL at LC-40 will retract at launch time, like it does at LC-39A, and not several minutes before launch, like at LC-4E (Vandenberg). Not only does it look way more dramatic and cool, but it's better from a safety and stability perspective since the TEL provides support for the rocket up until T-0. Quote Link to comment Share on other sites More sharing options...
tater Posted November 29, 2017 Share Posted November 29, 2017 Quote Link to comment Share on other sites More sharing options...
CatastrophicFailure Posted November 29, 2017 Share Posted November 29, 2017 31 minutes ago, DAL59 said: What does that mean? Its made with real sugar and comes with a nostalgic label. Quote Link to comment Share on other sites More sharing options...
DAL59 Posted November 29, 2017 Share Posted November 29, 2017 22 minutes ago, tater said: What about Zuma? Quote Link to comment Share on other sites More sharing options...
sh1pman Posted November 29, 2017 Share Posted November 29, 2017 18 minutes ago, DAL59 said: What about Zuma? Postponed indefinitely until the fairing problem is resolved. Quote Link to comment Share on other sites More sharing options...
DAL59 Posted November 29, 2017 Share Posted November 29, 2017 http://www.popularmechanics.com/space/rockets/a13974792/spacex-falcon-heavy-launch-pushed-back-to-201 Falcon Heavy is only 6 months weeks away! Quote Link to comment Share on other sites More sharing options...
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